Introduction to Row-Column Design
EXPERIMENTATION is an integral part of any research endeavour. Designing an experiment is therefore very important so as draw valid inferences from the data generated from the experiment keeping in view the objectives of the study and hypothesis to be tested. The choice of a design for a given situation is therefore extremely important.
Block designs are used when the heterogeneity present in the experimental material is in one-direction. However, when the heterogeneity present in the experimental material is in two directions i.e. rows and columns, then double grouping is done. The purpose of double grouping is to eliminate from the errors all differences among rows and equally all differences among columns. Designs used for the above situations are termed as Row-Column designs or designs for two-way elimination of heterogeneity. There can be
In a block design setting, the only source of variation, besides treatment, is the blocks. However, in the row-column setting, the sources of variation, besides the treatments, are the rows and column effects. One additional source of variation helps in reducing the experimental error and improving the precision of treatment comparisons.